Skip to main content

(Windows) Screen Error Due to AnySign4PC Conflict

Notice

This document is a machine-translated draft and is currently undergoing review. Some content may be inaccurate or differ from the original Korean version. For the most precise information, refer to the Korean documentation.

Symptoms​

While watching a video, the taskbar on the desktop disappears or becomes unresponsive, the video screen does not display, and only audio is output. Updating PC drivers or playing back in a different browser (Chrome, Edge, etc.) may not resolve the issue.

Cause​

This is caused by a process conflict between AnySign4PC — a digital certificate security program that must be installed when using domestic financial institutions or public agency websites (e.g., the National Sinmungo) — and the Kollus Player security module. AnySign4PC is not malicious software, but it runs continuously in the background as soon as the computer starts, occupying memory and CPU resources. The primary cause is that this process interferes with the player's screen output permissions and the Windows UI environment.

Resolution​

This prevents AnySign4PC from activating automatically when the computer starts, thereby avoiding conflicts. If you do not want to uninstall the program, this method temporarily stops the program from running only while you are watching videos.

  1. Press [Ctrl]+[Shift]+[Esc] on your keyboard to open Task Manager.
  2. Select [Startup apps] from the left menu or the top tab.
  3. Find AnySign4PC (or AnySign4PC Launcher) in the list, right-click it, and select [Disable].
  4. Reboot the system using [Restart], then try playing the video.

Uninstall anysign4pc​

If you have finished using the financial institution's website, uninstalling the program is the most definitive solution. (It will be automatically reinstalled whenever you visit a financial site again in the future.)

  1. Type 'Control Panel' in the Start menu search bar and open it.
  2. Navigate to [Programs] > [Programs and Features].
  3. Find AnySign4PC in the list of installed programs, right-click it, and click [Uninstall] to completely remove the program.
  4. Reboot the system using [Restart], then try playing the video.

Reference: check for program conflicts using event viewer​

In addition to the steps above, you can use Windows' built-in logs to definitively check which program is causing a conflict with Kollus Player.

  1. Press [Windows]+[R] on your keyboard to open the Run dialog, type eventvwr.msc, and press [Enter]. Event Viewer will open.
  2. In the left menu, select [Windows Logs] > [Application].
  3. In the center dashboard list, find and click a log with an Error or Warning status that occurred around the time the player stopped.
  4. In the details pane at the bottom, check whether a Kollus Player-related process conflicted with another security module (such as AnySign4PC).
Action after reviewing logs

If a conflict log is confirmed, note the process name and re-apply the resolution steps above (disable from startup or uninstall), or send the log details to the Kollus Technical Support team to request further assistance.